BTCPay Server is a self-hosted, open-source cryptocurrency payment processor. It's secure, private, censorship-resistant and free.
Clone the project locally. Note the submodule link to the original project(s).
git clone git@github.com:elvece/btcpayserver-wrapper.git
cd btcpayserver-wrapper
git submodule update --init --recursive
make
scp btcpayserver.s9pk root@embassy-<id>.local:/embassy-data/package-data/tmp # Copy S9PK to the external disk. Make sure to create the directory if it doesn't already exist
ssh root@embassy-<id>.local
embassy-cli auth login
embassy-cli package install /embassy-data/pacakge-data/tmp/btcpayserver.s9pk # Install the sideloaded package